Class Bivalvia Linnaeus, 1758 - bivalves
   Subclass Autobranchia Grobben, 1894
     Superorder Heteroconchia Gray, 1854
       Clade Heterodonta Neumayr, 1884
         Order Venerida Gray, 1854
           Superfamily Cardioidea Lamarck, 1809 [monotypic]
             Family Cardiidae Lamarck, 1809 - cockles
               Subfamily Lymnocardiinae Stoliczka, 1870
                 1 Tribe Lymnocardiini Stoliczka, 1870
                 2 Tribe Adacnini Gill, 1871
                 3 Tribe †Didacinini Eberzin, 1962
                 4 Tribe †Limnopappiini Schlickum, 1962
                 5 Tribe †Paradacnini Eberzin, 1967
                 6 Tribe †Prosodacnini Keen, 1937
                 7 Tribe †Pseudocarditini Keen, 1969
                 8 ?Tribe †Trapezicardiini Kanjilal & Srinivasan, 2002